dm.cs.tu-dortmund.de/en/mlbits/class-dtree-splitting/
Decision Tree Splitting – Lecture Notes
\text{Outlook})}\hspace{11.5em} & = - \tfrac {5}{14} \cdot \log _2 \tfrac {5}{14} - \tfrac {4}{14} \cdot \log _2 \tfrac {4}{14} - \tfrac {5}{14} \cdot \log _2\tfrac {5}{14} & & \approx 1.577 \\ \mathrlap {\t [...] 0
\(C_2\)
6
\(\text{Gini}=0.0\)
\(C_1\)
1
\(C_2\)
5
\(\text{Gini}\approx 0.278\)
\(C_1\)
2
\(C_2\)
4
\(\text{Gini}\approx 0.444\)
\(C_1\)
3
\(C_2\)
3
\(\text{Gini}=0.5\)
Note: in literature, you usually [...] ext {Gini}(T, \text{Outlook})}\hspace{12em} & \approx 0.459 - \tfrac {5}{14} \cdot 0.480 - \tfrac {4}{14} \cdot 0 - \tfrac {5}{14} \cdot 0.480 & & \approx \textcolor[RGB]{132,184,24}{0.116} \end{align*}\] …
